Re: Vitamin D supplementation and major cardiovascular events: D-Health randomised controlled trial bmj.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bmj.com Daily Mail and Mail on Sunday newspapers.
Objective To investigate whether supplementing older adults with monthly doses of vitamin D alters the incidence of major cardiovascular events.
Design Randomised, double blind, placebo controlled trial of monthly vitamin D (the D-Health Trial). Computer generated permuted block randomisation was used to allocate treatments.
Setting Australia from 2014 to 2020.
Participants 21 315 participants aged 60-84 years at enrolment. Exclusion criteria were self-reported hypercalcaemia, hyperparathyroidism, kidney stones, osteomalacia, sarcoidosis, taking >500 IU/day supplemental vitamin D, or unable to give consent because of language or cognitive impairment.
Intervention 60 000 IU/month vitamin D3 (n=10 662) or placebo (n=10 653) taken orally for up to five years. 16 882 participants completed the intervention period: placebo 8270 (77.6%); vitamin D 8552 (80.2%).
Main outcome measures The main outcome for this analysis was the occurrence of a major cardiovascular event, inclu